What Happened To Muhammad Ali Opponents, Oscar Bonavena

References:
El Ciudadano, https://www.elciudadanoweb.com/hace-44-anos-oscar-ringo-bonavena-perdia-en-un-prostibulo-de-reno-nevada-su-ultima-pelea/
Infobae, https://www.infobae.com/deportes-2/2016/10/09/ringo-bonavena-mito-leyenda-y-tragedia-del-boxeador-asesinado-por-la-mafia/
Boxing.com, http://www.boxing.com/wild_life_of_oscar_bonavena.html
Clarin, https://www.clarin.com/deportes/asesinato-oscar-bonavena-amenazas-escucho-juicio-peculiar-enemigo-sabe-vivo_0_nUcQxDmDJ.html

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